baber/WOPTO huggingface dataset:
Patent GB-977849-A (GB)
Title: Improvements in or relating to quantising and coding apparatus for pulse code modulation systems
Inventor: BREWSTER ARTHUR EDWARD
IPC: H03M1/00
Filed: 1962-09-12
Abstract: 977,849. Photo-electric wave form analysis. STANDARD TELEPHONES & CABLES Ltd. Sept. 12, 1962, No. 34838/62. Heading G1A. [Also in Division H4] Quantising and coding apparatus for use in a pulse code modulation system utilizes a standing wave pattern, the wavelength of which varies proportionally with the sampled parameter of a signal wave to be coded, a series of detectors sensitive to pattern change from a node to an anti-node being so positioned that their outputs generate a code combination representative of the signal sample parameter. In a preferred embodiment Fig. 4, the standing wave pattern is formed by a series of optical interference fringes obtained by illuminating partially reflecting planes formed by the upper faces of parallel plates F and M by a parallel beam of monochromatic light normal to the plane F. The interference fringes produced at the upper plane F are reflected by a partially reflecting plate Fig. 4, diagonally positioned in the light beam, through lens L2 to an apertured plate AP behind which are situated a series of photoelectric detectors PEC. When the planes F and M are parallel and spaced by a distance n#/2 where # is the wave-length, plate AP is illuminated by a single dark field and as the angle # between the plates increases so do the number of fringes visible at AP. The angle # is made dependent on the signal sample to be coded by applying the signal to electrodes Ma and Mb on the surfaces of parallel plate M which is formed of piezo electric crystal. Variations in signal level thus change the thickness of plate M and because of the positions of supports S and S(H) this has the effect of rotating plane Ma about S(H). The number of fringes appearing at AP is thus a direct measure of the signal level. The light source R is flashed on and off at the sampling frequency and the detectors PEC each control a two-state device so that its change of state occurs at the condition of 50% fringe intensity and they are so spaced that their collective outputs provide a binary code combination representative of the signal level. A connecting lens CP permits of linear spacing of the detectors. Transmitted rather than reflected fringes may be used and the planes F and M may be provided by the surfaces of a single plate in which the applied signal variations cause changes in refractive index.
Patent GB-839140-A (GB)
Title: Improvements in and relating to electrical brush gear
Inventor: CONSTERDINE EDWARD WHITELEY
IPC: H01R39/38
Filed: 1957-11-08
Abstract: 839,140. Brush-gear for dynamo-electric machines. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. Oct. 27, 1958 [Nov. 8, 1957], No. 34909/57. Class 35. To facilitate maintenance of the brushes of an electrical machine, e.g. a turbo-generator, whilst in use, groups of them are arranged on detachable carriers C having insulated handles 8. The carriers are secured to a conducting bracket 1 of U-section by studs 5b and are circumferentially located by T-projections which may slide in channelled slots 2 in one side of the bracket (Fig. 3, not shown). The radial position of each carrier may be predetermined by an adjustable stop comprising a bolt 22 carrying a block which bridges the top of each slot 2 (Fig. 7, not shown). Attached to each carrier, or cast integrally with it, are brush boxes 3 and a shelf member 4, the latter having threaded holes through which are screwed barrels 12 which guide spring-loaded brush holders b. These brush holders have insulated knobs 13 and diametrically placed pins which co-operate with bayonet slots in the barrels (Fig. 4, not shown) for retracting the brushes 9 and retaining them in that position. To absorb vibration the brushes are connected to the brush holders either by axial springs attached to insulating plates on the brushes by press stud fasteners (Fig. 5, not shown) or by a rubber member bonded to a brass plate attached to the brush (Fig. 6, not shown). In an alternative arrangement, the back plates 5 of the carriers are arranged parallel to the line of brushes instead of at right angles thereto and are secured in slots in intermediate box-shaped brackets 26 (Fig. 8, not shown) bolted to the main frame which need not now be U-shaped. In both arrangements the brushes in circumferentially adjacent rows may be axially staggered.
Patent GB-1158544-A (GB)
Title: Improvements in or relating to the Manufacture of Polyurethane Foams
Inventor: CROOK JAMES WILLIAM
IPC: C08G18/48
Filed: 1965-08-16
Abstract: 1,158,544. Polyurethane foams. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Aug., 1966 [16 Aug., 1965], No. 34924/65. Headings C3C and C3R. Polyurethane foams are prepared by reacting an organic polyisocyanate with a polyether polyol in the presence of a conventional blowing agent and tris-monochloropropyl phosphate (e.g. tris-2-chloropropyl phosphate). The latter may be prepared by reaction of propylene oxide with phosphorus oxychloride in the presence of a titanium or zirconium halide and may be present at 2 to 40% by wt. of the polyurethane foam. The isocyanate used may be a crude diisocyanatodiarylmethane obtained by phosgenation of a crude diaminodiarylmethane. From 5 to 70% by weight of the total isocyanate may have a functionality >2. The polyether polyol may be prepared by polymerization of an alkylene oxide; it may contain 3 to 8 OH groups per molecule and have an OH value of 200-750 mg. KOH/g.
Patent GB-959972-A (GB)
Title: Screen-printing apparatus
IPC: B41F23/04
Filed: 1962-09-13
Abstract: 959,972. Electric - heating resistances. HEBERLEIN & CO. A.G. Sept. 13, 1962 [Sept. 27, 1961; Oct. 27, 1961; Nov. 27, 1961], No. 34975/62. Heading H5H. [Also in Division B6] A laminar electric heater, for drying the printed colours applied by stencilling, comprises. Fig. 4, woven steel wires 8 sandwiched between a lower glass fibre fabric layer 9 and an upper protective layer 10 of plastics material which may be loaded with metal powder and may be applied by spraying. A reflective layer 11 of aluminium foil prevents downward radiation. Layer 11 may be omitted. The metal fabric layer 8 may include steel and copper filaments to give both resistive and conductive paths. Several such heaters may be connected in parallel. As shown in Fig. 6, a cotton, polyester, or glass fibre fabric has areas 17 including steel warp filaments to form heating areas. Alternatively steel warp filaments may be distributed uniformly in the fabric or may constitute weft filaments. The fabric of Fig. 6 may have upper and lower coatings as described above. In a further form. the heaters are formed by metallic resistive foils adhesively secured to an insulating table.
Patent GB-1269208-A (GB)
Title: Fluid pressure operated sensing device
Inventor: KAY FRANCIS XAVIER
IPC: F15C1/00
Filed: 1968-07-23
Abstract: 1,269,208. Valves. INSTRUMENTS & MOVEMENTS Ltd. 13 Aug., 1969 [23 July, 1968], No. 35070/68. Heading F2V. [Also in Division G1] A valve has a duct connected to a source of compressed air, the duct having an exhaust passage which is closed when a thrust is applied to a valve member. The thrust is provided by a jet of air acting on the member and interruptable by the presence of an object. The pressure in the duct is indicative of the presence or absence of the thrust and actuates a fluidic circuit, a valve, or a pressure gauge. In one embodiment the duct 3 has an exhaust passage 4, and a disc 6 is the valve member which selectively closes the passage 4. When a jet of air passes through aperture 12 the disc seals the passage so that the pressure in duct 3 becomes high. When the jet is interrupted the air in duct 3 exhausts via passages 4, 8, and 2, the pressure in duct 3 becoming low.
Patent GB-304896-A (GB)
Title: Improvements in the metallic tubular parts of bedsteads, cots, and analogous articles
IPC: F16B12/56
Filed: 1927-12-28
Abstract: 304,896. Turner, Ltd., S. F., and Crumpton, F. Dec. 28, 1927. No Patent granted (Sealing fee not paid). Joints.-In bedsteads, cots, &c., tubes such as 1, 4 are connected by metal 8 formed into the tube 4 and surrounding a screwed peg projecting from the tube 1 into the tube 4.
Patent GB-487502-A (GB)
Title: Improvements in or relating to thermionic valve oscillation generators
IPC: H03F1/08
Filed: 1936-12-21
Abstract: 487,502. Valve generating circuits. FERNSEH AKT.-GES. Dec. 21, 1936, No. 35099. Convention date, Dec. 20, 1935. [Class 40 (v)] In an oscillation-generator of ultra-high frequency an inductance 9, which. may be shunted by a condenser, is inserted between the tuned circuit I and cathode in order to counteract the phase lag due to the transit time of the electrons, and thereby to stabilize the oscillations over a range of frequency. The inductance resonates with the earth capacity of the cathode at a frequency below the working frequency. If the transit time were negligible the anode potential and grid potential would differ by 180‹ in phase, but actually the phasedifference is substantially less than this owing to the transit time, and in consequence the frequency of the oscillations generated may differ from the natural frequency of the circuit I so much as to render the oscillations unstable. The vector BA, Fig. 4, representing the potential difference between the point B and anode A when the circuit I is oscillating at its natural frequency so as to behave as a pure resistance, is combined with a vector KB representing the potential difference between the point B and the cathode, to produce a vector KA which represents the actual potential difference between cathode K and anode A under optimum conditions, and similarly the vectors KB, BG combine to produce the optimum grid-cathode vector KG. The requisite vector KB is produced by inserting an inductance 9 in shunt with the earth-capacity 10 of the cathode, and the pair 9, 10 is so tuned that its impedance is capacitive at the oscillation frequency, and the angle between the vectors KA, KG decreases as the frequency increases. A similar arrangement is adopted when the grid circuit, Fig. 3 (not shown), or both grid and plate circuits, Fig. 4 (not shown), are tuned, or in capacitycoupled oscillators the natural capacity 10 of the cathode may be supplemented by a condenser which may be ganged with the tuning-condenser. The earth-capacity of the cathode may be reduced by inserting highfrequency chokes 8 in series with the heater 7 and by earthing the metallizing of the calve and the screening or suppressor grid directly instead of through the cathode. According to the Specification as open to inspection under Sect. 91 the inductance 9 may be replaced by a resistance, but this subjectmatter does not appear in the Specification as accepted.
Patent GB-1014864-A (GB)
Title: Improvements in and relating to fasteners
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: B60R13/02
Filed: 1962-09-14
Abstract: 1,014,864. Spring clips. F. T. PRODUCTS Ltd. Sept. 12, 1963 [Sept. 14, 1962], No. 35180/62. Heading E2B. A resilient fastener is formed from a single strip of metal to an approximate U shape so as to have a web 11 and two limbs 12, 13 and a said limb has a prong directed inwardly towards the opposite limb and rearwardly towards the web and each limb has generally parallel side edges and a transverse end edge, the end edge portion of each limb adjacent one of the side edges being inclined to the adjacent side edge at an angle greater than 90 degrees and the corner of the limb formed thereby being bent outwardly away from the opposite limb. In the construction shown each limb has two prongs 14 and 15 and the outwardly bent corners 20a and 21a are each bent about a line which is inclined to the web. A plurality of such fasteners are used for assembling a channel shaped member such as a hot air vent in a motor vehicle to a panel, each fastener being pressed over the vent so that the limbs embrace the vent and with end edge portions 18 and 19 abutting against the inner surface of a retaining rim of the vent; the prongs of one limb then engage over the edge of apertures in one flange of the vent and the prongs of the other limb bite into another side flange of the vent. The vent with the fasteners is then passed through an aperture in the panel and the outwardly bent corners 20a and 21a of each limb of each fastener are forced resiliently inwardly and then snapped back into engagement underneath the panel so that edge portions 16 and 17 are pressed resiliently against the panel to hold the rim firmly against the outer surfaces of the panel.
Patent GB-734171-A (GB)
Title: Improvements in or relating to shelf structures
IPC: A47F3/12
Filed: 1953-12-18
Abstract: 734,171. Shelving ; joints. LEENS, A. Dec. 18, 1953 [Dec. 19, 1952; May 6, 1953], No. 35244/53. Classes 52 (1) and 52 (2). A support for glass plates &c. 21, 22, 23 to form shelving comprises a prismatic body 1 carrying on one face clamping members 2, 3 each formed by a resilient blade 15 folded into V-shape of which one limb 14 is secured in a groove 8 in the body. In modifications, stops limit the bending of the clamping members.
Patent GB-1374408-A (GB)
Title: Signal generator
IPC: H03J9/06
Filed: 1973-07-24
Abstract: 1374408 Radio recieving circuits; transistor generating and pulse circuits; stabilizing pulse generators MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 24 July 1973 [28 July 1972 (4)] 35269/73 Headings H3Q and H3T [Also in Division G1] A signal generator comprises a generating circuit 5, Fig. 1, producing a signal which is applied across base and emitter of a transistor 3 which is connected to a load, e.g. light emitting diode 1; a resistor 13 is provided between the generating circuit 5 and base of transistor 3, its value being preset so that the current carried by the transducer is not reduced when the output of the generating circuit 5 is reduced. The embodiment comprises the transmitter of a light-operated remote control arrangement for a television receiver, the oscillator 5 pulsing the transistor 3 and hence light-emitting diode 1 at 40KHz: according to the Specification a value for resistor 13 can be so chosen that the light emission is little affected until the voltage of the battery 4 has fallen considerably (Fig. 4, not shown). The receiver comprises a photo-transistor 20, Fig. 5, transformer 21 with secondary tuned to the oscillator frequency, amplifier 22, and rectifier 23, followed by a transistor 24 which operates a controlling relay 25.
Patent GB-930566-A (GB)
Title: Testing of pressure vessels
IPC: G01N3/12
Filed: 1961-09-29
Abstract: 930,566. Testing hollow-ware. DOW CHEMICAL CO. Sept. 29, 1961 [Sept. 30, 1960], No. 35280/61. Class 106 (2). [Also in Group XXVIII] Apparatus for testing hollow vessels comprises a constant volume pump for delivering hydraulic fluid to the vessel and a pressure detector connected to the vessel. A recorder gives a record of pressure against time. A change in the slope of the pressure time graph indicates the elastic limit of the vessel has been reached and the test may be stopped to prevent permanent deformation of the vessel.
Patent GB-352853-A (GB)
Abstract: 352,853. Interrupters. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Oct. 24, 1930, No. 31958. Convention date, Nov. 16, 1929. [Class 38 (v).] An electric make-andbreak device, as used in internal-combustion engine ignition circuits, comprises a pair of cam-operated contactbreakers 3, 5, one of which is mounted together with its retracting spring 9 upon a plate 4 adjustable relatively to the baseplate 1. The other contact-breaker and its spring are made as a similar unit to the first but mounted in a fixed position on the baseplate. The object of the common mounting is to allow the timing to be adjusted without affecting the tension of the spring.
Patent GB-1489449-A (GB)
Title: Method and machine for lapping workpieces
IPC: B24B57/00
Filed: 1975-08-27
Abstract: 1489449 Valves JMJ WERKZEUGMASCHINEN GmbH FUR FEINBEARBEITUNG 27 Aug 1975 [27 Aug 1974] 35414/75 Heading F2V [Also in Division B3] A method of lapping workpieces to plane, plane parallel or circular configuration with a lapping abrasive which is fed to the workpieces on a circular lapping abrasive path and in a specific quantity, comprises feeding lapping abrasive to the workpieces on at least one further circular lapping abrasive path of different diameter from that of the first path, the paths being concentric and the lapping abrasive being fed separately to the paths. In apparatus for carrying out the method, a main spindle 11 is rotatable and normally slidable in a housing 10 of a lapping machine and has an upper end 1 la splined to receive a drive pulley 12 and a lower end secured to a carrier 13 for a lapping plate 14. The carrier has two concentric grooves 15, 16 which communicate with the surface of the lap by means of respective bores 17, 18. A metering device 20 is secured to the housing and has two inlet pipes 21, 22 and two flexible outlet tubes 23, 24 connected to end elements 25, 26 which are fixed to a cross-piece 28 and have wiper elements 27 engaging the grooves 15, 16 to brush the lapping abrasive issuing from the elements 25, 26 into the bores 17, 18 as the carrier 13 rotates. The metering device 20 consists of a container 40 having a cover 41 formed with a pair of transverse bores 42, 43 each of which contains a respective piston 44, 45 movable in its bore against the pressure of springs 59 by hydraulic fluid supplied under pressure to spaces 55. Each piston carries a respective inlet tube 46, 47 connected to an associated inlet pipe 21, 22 and is formed at its lower end with a nozzle 49, 50 which may be slit shaped. The nozzles co-operate with outlet tubes 51, 52 which are fixed in the container and connected to respective outlet tubes 23, 24. The device is normally in the position shown in Fig. 3 so that continuously supplied lapping abrasive flows from the inlet tubes 46, 47 into the container and is returned by a discharge duct 65 to a mixing container. When hydraulic fluid is supplied to the spaces 55, the pistons move against the springs to align the inlet tubes with the outlet tubes so that the lapping abrasive flows to the grooves 15, 16; set screws 62 can adjustably limit the movement of the pistons so that the nozzles are only partially aligned with the outlet tubes 51, 52 to control the amount of lapping abrasive supplied to the grooves. The separate control of the movement of the pistons regulates the flow of lapping abrasive to the circular paths so as to compensate for uneven wear of the lapping plate.
Patent GB-1123063-A (GB)
Title: Main drive means for a gear hobbing machine
Inventor: BRADNER JOHN ALEXANDER
IPC: B23F23/12
Filed: 1965-08-19
Abstract: 1,123,063. Gear-cutting. LEES-BRADNER CO. 19 Aug., 1965, No. 35632/65. Heading B3K. A hobbing machine comprises a hob head mounted for vertical and angular adjustment and carrying a main driving means 6 for the hob. The means 6 is a variable speed hydraulic motor. The motor 6 also rotates the work spindle 55, through a differential L, and a feed-screw 66. Fast return feed is provided by an hydraulic motor 77 driving through a differential T and associated with a brake 79.
Patent GB-468281-A (GB)
Title: Fluid reaction propelling apparatus
IPC: F02K5/00
Filed: 1935-12-27
Abstract: 468,281. Propelling aircraft. ENDRES, H., and BACHMANN, E. Dec. 27, 1935, No. 35826. Convention date, Nov. 28. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 1, 1936.] [Class 4] In a reaction-propulsion unit as described in Specification 424,546, the discharge nozzles 26 are arranged separately from the compression devices 17 and communicate with the vacuumcylinder spaces of the compression devices. As shown, the compressor 18 delivers air into the chambers 22 from which it passes under the pilot's control to the nozzles. The nozzles disposed in the aircraft wings are controlled singly or in pairs by cams carried by a camshaft 31 and which operate piston valves 25 against the action of springs 27. The devices 17 are arranged around a circle in the fuselage and communicate through non-return valves with the chambers 22. A suction chamber 33 communicates through non-return valves with the vacuum-cylinder spaces. The wings and the fuselage frames may be formed as lightmetal castings. The nozzles discharge through apertures 23 in the wings.
Patent GB-1159395-A (GB)
Title: Improvements in or relating to Hydraulic Jet Propulsion Units
Inventor: ANGIER RICHARD
IPC: B63H11/00
Filed: 1966-08-10
Abstract: 1,159,395. Water jet propulsion. U.A. ENGINEERING Ltd. 5 Oct., 1967 [10 Aug., 1966], No. 35877/66. Heading B7V. An hydraulic jet propulsion unit comprises an outlet pipe 3 which merges smoothly with progressively decreasing internal cross-sectional area from a circular internal section at upstream end 3a to a rectangular internal section at downstream end 3b which communicates with a steering box 5 of corresponding rectangular section, a deflector 7 pivotally mounted on the box and operative to deflect an hydraulic jet stream passing through the box for steering or for imparting a reverse thrust, and a plate 28a disposed downstream of the outlet pipe and slidable into the rectangular section from one side to vary the effective flow cross-sectional area while maintaining the rectangular shape of the area.
Patent GB-989905-A (GB)
Title: Improvements in and relating to rotary brushes
IPC: A46B13/00
Filed: 1962-09-20
Abstract: 989,905. Brushes. OSBORN MANUFACTURING CO. Sept. 20, 1962 [Oct. 24, 1961], No. 35892/62. Addition to 945,926. Drawings to Specification. Heading A4K. The bristles of a rotary brush pass through an array of discrete elastomeric bodies so that they are resilently supported against deflections from their radial positions. The bodies may be large and irregular (Fig. 1, not shown) or numerous, small, regular and randomly distributed (Figs. 3, 8, 9 and 13, not shown) or equally spaced in a ring or rings concentric with the brush axis (Figs. 10 and 11, not shown). Bodies formed on either side of the brush may overlap (Fig. 2, not shown) or run together through the brush (Figs. 4-7, not shown). The elastomers and bristles may be the same as in the parent Specification with the addition of, for the elastomers, cellular or non-cellular polychloroprene, natural rubber, acrylonitrile, nylon or melamine resins and, for the bristles, a mixture of hard straight wire and soft wire or stainless steel wire having a thin bonded plastic coating.
Patent GB-726529-A (GB)
Title: Means for lubricating worm gears
IPC: F16H55/22
Filed: 1953-12-30
Abstract: 726,529. Lubricating. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 30, 1953 [Jan. 7, 1953], No. 36152/53. Class 12 (3). The teeth of a worm 1 are lubricated by oil in which a'worm wheel 2 dips, the worm wheel being provided on one or each side with a collar 3, the edge of which extends at an obtuse angle away from the side of the wheel 2. The collar may have its edge corrugated or provided with grooves or projections whereby to retain oil at the top of the wheel when the worm gear is at rest.
Patent GB-1356427-A (GB)
Title: Process for separating glucagon from pancreatic extracts
IPC: C07K14/605
Filed: 1971-08-02
Abstract: 1356427 Glucagon from pancreatic extracts ELI LILLY & CO 2 Aug 1971 [3 Aug 1970] 36191/71 Heading C3H A process for separating glucagon from pancreatic extracts containing, in addition to glucagon, insulin and other protein-like pancreatic by-products comprises passing the extract of pH 7-8 over the alkali or alkaline earth metal form of a sulphonated macroreticular styrene-divinylbenzene copolymer whereby the glucagon is adsorbed on to the resin and the insulin and other protein-like materials remain in solution, and then eluting the glucagon with dilute base.